I did it without this website. @kooona the secret entrance is just a staircase going downwards. Something else to note: If you don’t get the key after getting into the room you won’t be able to get to the room ever again!! The squid (not octupus(I know I spelt that wrong)) won’t come again after you go down the secret entrance so make sure you GET THE KEY!! PS: the key is called the moss key and also doubles as a pin, just like Rochopper’s Captain’s Quarters key.